•In 1976, philosopher Dan Dennettsuggested putting it all together, but

with a low level of performance

The Whole Iguana

“... why not obtain one's simplicity and scaling down byattempting to model a whole cognitive creature of muchless sophistication than a human being?... a turtle, perhaps... [but] considering the abstractness of the problemsproperly addressed in AI ... one does not want to boggeddown in the cognitive eccentricities of turtles if the point ofthe exercise is to uncoververy general,very

abstractproperties that will apply as well to the cognitiveorganisation of … human beings. So why not make up awhole cognitive creature, a Martian three-wheeled iguana,say, and an environmental niche for it to cope with? I thinksuch a project could teach us a great deal about the deepprinciples of human cognitive psychology …”